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MANUFACTURE OF LOGKETS.

(No Model.)

WITNESSES UNITED STATES PATENT. OFFICE.

CHARLES S. PINE, OF PROVIDENCE, RHODE ISLAND.

MANUFACTURE OF LOCKET'S.

SPECIFICATION forming part of Letters Patent No. 277,339, dated May 8,1883.

Application filed February 5, 1881. (No model.)

'To all whom it may concern and useful Improvement in Lockets; and I.

hereby declare that the following is a full,

clear, and exact description of the same, reference being had to theaccompanying drawings, forming part of thisspecitication.

The object of this invention is to construct three-part lockets ofstock-plate in such a manner that the edge of the plate shall at nopoint be presented to view.

The invention consists in constructing the three parts of the locketsdescribed out of stamped stock-plate, the inner surface of which istrimmed, and uniting the parts by subjecting them to sufficient heat tomelt the tin while the joints are held tightly together, as will be morefully set forth hereinafter.

Figure 1 is a perspectiveriew of a three. part locket. Fig. 2 representsthe parts formin g the locket before theyare soldered together. Fig. 3represents the parts soldered together, hinged, and provided with thesnap by which they are held closed. Fig. 4representsapart of the locketforming the outer cover as first stamped. Fig. 5 represents the samepart after it has passed through the shearing-die, and Fig. 6 after thejoint has been ground.

In stock-plate only one side of the metal is fine gold. The edge will,therefore, show the inferior metal, and lockets made of such stockplatecan be readily recognized and will soon discolor at the edges.

The parts a and b in solid gold lockets are secured together by makingI) suffioiently smaller so as to solder it within the part a.

To make the same quality of stock-plate, I'

make the two parts of the same size and grind the joints 0 a perfectlytrue. The stock-plate before stamping I coat with tin, and when I nowwire the parts a and b together and subject them to heatthe tin on theinside melts, and, by properly turning, solders the two parts firmlytogether. When no\v.the whole is polished no seam orjoint is visible,and the edges of the stock-plate are covered, so that only the pure goldis in sight, thus makingalocket as fine in appearance, that will standall the gold tests, and is stronger and cheaper than a gold locket.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. T he improvement in the art of manufacturinglockets, the same consisting in tinning the inner surface of the stampedplates forming the locket, securing the parts together, and subjectingthe same to sufficient heat to melt the tin and firmly unite the same,as described.

2. The improvement in the art of making lockets, the same consistingincoating the plate with tin, stamping the tinned plate, binding the partstogether, and subjecting the whole to heat to melt the tin and solderthe parts together, as described.

In witness whereof I have hereunto affixed my name.

GHASS. PINE. Witnesses:

J. A. MILLER, Jr., WM. L. (300?.

